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https://issues.apache.org/jira/browse/FLINK-7076?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16237745#comment-16237745
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ASF GitHub Bot commented on FLINK-7076:
---------------------------------------
Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/4729#discussion_r148807573
--- Diff:
flink-yarn/src/main/java/org/apache/flink/yarn/YarnResourceManager.java ---
@@ -63,11 +64,14 @@
* The yarn implementation of the resource manager. Used when the system
is started
* via the resource framework YARN.
*/
-public class YarnResourceManager extends ResourceManager<ResourceID>
implements AMRMClientAsync.CallbackHandler {
+public class YarnResourceManager extends ResourceManager<YarnWorkerNode>
implements AMRMClientAsync.CallbackHandler {
/** The process environment variables. */
private final Map<String, String> env;
+ /** YARN container map. Package private for unit test purposes. */
+ final Map<String, YarnWorkerNode> workerNodeMap;
--- End diff --
Let's make it more visible that this map is a concurrent map by setting the
type to `CocnurrentHashMap`.
> Implement container release to support dynamic scaling
> ------------------------------------------------------
>
> Key: FLINK-7076
> URL: https://issues.apache.org/jira/browse/FLINK-7076
> Project: Flink
> Issue Type: Sub-task
> Components: ResourceManager
> Reporter: Till Rohrmann
> Assignee: Shuyi Chen
> Priority: Major
> Labels: flip-6
>
> In order to support dynamic scaling, the {{YarnResourceManager}} has to be
> able to dynamically free containers. We have to implement the
> {{YarnResourceManager#stopWorker}} method.
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